rspecを用いたコントローラーのテストにおいて、DBにuser登録するテストが通らない。 新規ユーザー登録実装方法：devise/ウィザード形式

Question

Ruby on railsにてECサイトを開発中。
deviseを用いて新規ユーザー登録をウィザード形式で実装（１ページ目 ユーザー情報 →　２ページ目 携帯電話　→　３ページ目 住所　→　４ページ目　クレジッド　→
登録完了！）実装は完了済み。
新規登録のcontrollerテストをrspecを用いて記述中。
４ページ目のcreate_cardメソッドにおいて、どうしてもDBにユーザーが登録されるテストが通らない。
原因はsessionがらみかなとはと思うのですが・・・ググってもなかなか解決できず、初心者で基本的なことかもしれず申し訳ありませんがご教授願います。

Post #create_card
    card is valid
      リクエストは302 リダイレクトとなること (FAILED - 1)
      データベースに新しいユーザーが登録されること (FAILED - 2)

Failures:

  1) Users::RegistrationsController Post #create_card card is valid リクエストは302 リダイレクトとなること
     Failure/Error: expect(response.status).to eq 302
     
       expected: 302
            got: 200
     
       (compared using ==)
     # ./spec/controllers/users/registrations_controller_spec.rb:160:in `block (4 levels) in <top (required)>'

  2) Users::RegistrationsController Post #create_card card is valid データベースに新しいユーザーが登録されること
     Failure/Error:
       expect do
         subject
       end.to change{User.count}.by(1)
     
       expected `User.count` to have changed by 1, but was changed by 0
     # ./spec/controllers/users/registrations_controller_spec.rb:169:in `block (4 levels) in <top (required)>'

Finished in 0.3602 seconds (files took 1.8 seconds to load)
17 examples, 2 failures

Failed examples:

rspec ./spec/controllers/users/registrations_controller_spec.rb:157 # Users::RegistrationsController Post #create_card card is valid リクエストは302 リダイレクトとなること
rspec ./spec/controllers/users/registrations_controller_spec.rb:168 # Users::RegistrationsController Post #create_card card is valid データベースに新しいユーザーが登録されること

#registrations_controller.rb↓

require 'rails_helper'

describe Users::RegistrationsController do

  describe 'Post #create_card' do

#途中のテストは省略

    context 'card is valid' do
      before do
        @request.env["devise.mapping"] = Devise.mappings[:user]
        @user = attributes_for(:user)
        session["devise.regist_data"] = {user: @user}
        @cellphone = attributes_for(:cellphone)
        @address = attributes_for(:address)
        @card = attributes_for(:card)
      end

      subject {
        post :create_card, params: {card: @card },
        session: {
          user: @user,
          cellphone: @cellphone,
          address: @address
        }
      }

      it 'リクエストは302 リダイレクトとなること' do
        post :create_card, params: {card: @card}
        subject
        expect(response.status).to eq 302
      end

      it 'データベースに新しいユーザーが登録されること' do
        expect do
          subject
        end.to change{User.count}.by(1)
      end
    end
  end
end

#registrations_controller.rb

# frozen_string_literal: true

class Users::RegistrationsController < Devise::RegistrationsController
  before_action :configure_sign_up_params, only: [:create]
  # before_action :configure_account_update_params, only: [:update]

  # GET /resource/sign_up

  def new
    @user = User.new
  end

  # POST /resource
  def create
    @user = User.new(sign_up_params)
    unless @user.valid?
      flash.now[:alert] = @user.errors.full_messages
      render :new and return
    end
    session["devise.regist_data"] = {user: @user.attributes}
    session["devise.regist_data"][:user]["password"] = params[:user][:password]
    @cellphone = @user.build_cellphone
    render :new_cellphone
  end

  def create_cellphone
    @user = User.new(session["devise.regist_data"]["user"])
    @cellphone = Cellphone.new(cellphone_params)
    unless @cellphone.valid?
      flash.now[:alert] = @cellphone.errors.full_messages
      render :new_cellphone and return
    end
    @user.build_cellphone(@cellphone.attributes)
    session["cellphone"] = @cellphone.attributes
    @address = @user.build_address
    render :new_address
  end

  def create_address
    @user = User.new(session["devise.regist_data"]["user"])
    @cellphone = Cellphone.new(session["cellphone"])
    @address = Address.new(address_params)
    unless @address.valid?
      flash.now[:alert] = @address.errors.full_messages
      render :new_address and return
    end
    @user.build_cellphone(@cellphone.attributes)
    @user.build_address(@address.attributes)
    session["address"] = @address.attributes
    @card = @user.build_card
    render :new_card
  end


  def create_card
    @user = User.new(session["devise.regist_data"]["user"])
    @cellphone = Cellphone.new(session["cellphone"])
    @address = Address.new(session["address"])
    @card = Card.new(card_params)
    unless @card.valid?
      flash.now[:alert] = @card.errors.full_messages
      render :new_card and return
    end
    @user.build_cellphone(@cellphone.attributes)
    @user.build_address(@address.attributes)
    @user.build_card(@card.attributes)
    @user.save
    sign_in(:user, @user)
  end 

  # GET /resource/edit
  # def edit
  #   super
  # end

  # PUT /resource
  # def update
  #   super
  # end

  # DELETE /resource
  # def destroy
  #   super
  # end

  # GET /resource/cancel
  # Forces the session data which is usually expired after sign
  # in to be expired now. This is useful if the user wants to
  # cancel oauth signing in/up in the middle of the process,
  # removing all OAuth session data.
  # def cancel
  #   super
  # end

  protected

  # If you have extra params to permit, append them to the sanitizer.
  def configure_sign_up_params
    devise_parameter_sanitizer.permit(:sign_up, keys: [:attribute])
  end

  def cellphone_params
    params.require(:cellphone).permit(:number)
  end

  def address_params
    params.require(:address).permit(:zip_code, :prefecture, :city, :address, :building, :phone_tell)
  end

  def card_params
    params.require(:card).permit(:number, :validated_date_year, :validated_date_month, :security_number)
  end



  # If you have extra params to permit, append them to the sanitizer.
  # def configure_account_update_params
  #   devise_parameter_sanitizer.permit(:account_update, keys: [:attribute])
  # end

  # The path used after sign up.
  # def after_sign_up_path_for(resource)
  #   super(resource)
  # end

  # The path used after sign up for inactive accounts.
  # def after_inactive_sign_up_path_for(resource)
  #   super(resource)
  # end
end

#rails_helper.rb

# This file is copied to spec/ when you run 'rails generate rspec:install'
require 'spec_helper'
ENV['RAILS_ENV'] ||= 'test'

require File.expand_path('../config/environment', __dir__)

# Prevent database truncation if the environment is production
abort("The Rails environment is running in production mode!") if Rails.env.production?
require 'rspec/rails'
# Add additional requires below this line. Rails is not loaded until this point!

# Requires supporting ruby files with custom matchers and macros, etc, in
# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
# run as spec files by default. This means that files in spec/support that end
# in _spec.rb will both be required and run as specs, causing the specs to be
# run twice. It is recommended that you do not name files matching this glob to
# end with _spec.rb. You can configure this pattern with the --pattern
# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
#
# The following line is provided for convenience purposes. It has the downside
# of increasing the boot-up time by auto-requiring all files in the support
# directory. Alternatively, in the individual `*_spec.rb` files, manually
# require only the support files necessary.
#
# Dir[Rails.root.join('spec', 'support', '**', '*.rb')].each { |f| require f }

# Checks for pending migrations and applies them before tests are run.
# If you are not using ActiveRecord, you can remove these lines.
begin
  ActiveRecord::Migration.maintain_test_schema!
rescue ActiveRecord::PendingMigrationError => e
  puts e.to_s.strip
  exit 1
end
RSpec.configure do |config|
  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
  config.fixture_path = "#{::Rails.root}/spec/fixtures"
  config.include FactoryBot::Syntax::Methods
  # config.include Devise::TestHelpers, type: :controller
  config.include Devise::Test::ControllerHelpers, type: :controller
  # If you're not using ActiveRecord, or you'd prefer not to run each of your
  # examples within a transaction, remove the following line or assign false
  # instead of true.
  config.use_transactional_fixtures = true

  # RSpec Rails can automatically mix in different behaviours to your tests
  # based on their file location, for example enabling you to call `get` and
  # `post` in specs under `spec/controllers`.
  #
  # You can disable this behaviour by removing the line below, and instead
  # explicitly tag your specs with their type, e.g.:
  #
  #     RSpec.describe UsersController, :type => :controller do
  #       # ...
  #     end
  #
  # The different available types are documented in the features, such as in
  # https://relishapp.com/rspec/rspec-rails/docs
  config.infer_spec_type_from_file_location!

  # Filter lines from Rails gems in backtraces.
  config.filter_rails_from_backtrace!
  # arbitrary gems may also be filtered via:
  # config.filter_gems_from_backtrace("gem name")
end

Answer 1

Users::RegistrationsController#create_card

def create_card
@user = User.new(session["devise.regist_data"]["user"])
@cellphone = Cellphone.new(session["cellphone"])
@address = Address.new(session["address"])
@card = Card.new(card_params)
unless @card.valid?
flash.now[:alert] = @card.errors.full_messages
render :new_card and return
end
@user.build_cellphone(@cellphone.attributes)
@user.build_address(@address.attributes)
@user.build_card(@card.attributes)
@user.save
sign_in(:user, @user)
end

そもそもコントローラでリダイレクトするように書かれていないように見受けられます。
`sign_in(:user, @user)`部分でリダイレクトされているのであればその部分を追記してください。
また、このコードで実際に画面で動かした時は正しく動作していますか？

Comments

[shuya-tamaru]

ありがとうございます！
開発環境では問題なく正しく動作してます！
いただいた回答を参考に、sign_in @userを入れたことで、とりあえず一歩進んだような気はします。

現状、２つのテストが同様のエラー
RuntimeError:
Could not find a valid mapping for

になったので、今度はこれを解決していこうと思います！